Also helps if you know when to stop, if your luck runs out.I made 5,6 celest in a row with almost no fails, than my luck bricked, and had about 10 fails on last 2. Doing 1-5 regrades at a time for me has proven most successfull.If you do not have luck in those 5, try later.
The player here is reffering to proc when crafting weapons into higher tiers, i think, and no, it can still proc quite often.Just less and less at higher tiers.